131279755 has 4 divisors (see below), whose sum is σ = 157535712. Its totient is φ = 105023800.

The previous prime is 131279741. The next prime is 131279803. The reversal of 131279755 is 557972131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 557972131 = 31 ⋅17999101.

It is not a de Polignac number, because 131279755 - 2⁹ = 131279243 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13127971 + ... + 13127980.

It is an arithmetic number, because the mean of its divisors is an integer number (39383928).

Almost surely, 2^131279755 is an apocalyptic number.

131279755 is a deficient number, since it is larger than the sum of its proper divisors (26255957).

131279755 is an equidigital number, since it uses as much as digits as its factorization.

131279755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26255956.

The product of its digits is 66150, while the sum is 40.

The square root of 131279755 is about 11457.7377784622. The cubic root of 131279755 is about 508.2365791547.

The spelling of 131279755 in words is "one hundred thirty-one million, two hundred seventy-nine thousand, seven hundred fifty-five".